Nonlinear Structures in an Ion-Beam Plasmas Including Dust Impurities with Nonthermal Nonextensive Electrons  

作　　者：Debjit Dutta Biswajit Sahu Debjit Dutta Biswajit Sahu(Department of Mathematics, National Institute of Technology;Department of Mathematics, West Bengal State University)

机构地区：[1]Department of Mathematics, National Institute of Technology, Agartala, Jiraniya 799046, India [2]Department of Mathematics, West Bengal State University, Barasat, Kolkata 700126, India

出　　处：《Communications in Theoretical Physics》2017年第7期117-124,共8页理论物理通讯（英文版）

摘　　要：The properties of dust ion acoustic waves are investigated in an unmagnetized multicomponent plasma system consisting of ion beam, charged positive and negative ions, electrons obeying nonthermal-Tsallis distribution and stationary negatively charged dust grains by the conventional Sagdeev pseudopotential method, through which the condition for existence of several nonlinear structures is analyzed theoretically. The dispersion relation for electrostatic waves is derived and analyzed and an expression of the energy integral equation is obtaJned. It is reported here that our plasma model supports solitions, double layers and supersoliton solutions for certain range of parameters. Finally, the effects of different physical plasma parameters on these nonlinear structures are studied numerically. The present theory should be helpful in understanding the salient features of the electrostatic waves in space and in laboratory plasmas where two distinct groups of ions and non-Maxwellian distributed electrons are present.

关 键 词：multicomponent plasma dust ion acoustic waves solitons and supersolitons 

分 类 号：O53[理学—等离子体物理]